Cash, cash equivalents and investments of $843.0 million7, with no debt

Full Year 2013 Highlights

Billings of $684.2 million, up 14% year over year1,3

Revenues of $615.3 million, up 15% year over year3

GAAP diluted net income per share of $0.263

Non-GAAP diluted net income per share of $0.481,3

Cash flow from operations of $147.4 million

Free cash flow of $133.5 million1

Fortinet® (NASDAQ: FTNT) -- a leader in high-performance network security -- today announced financial results for the fourth quarter and full year ended December 31, 2013.

"We had a strong finish to 2013, meeting or exceeding our expectations across our key non-GAAP operating metrics during the fourth quarter," said Ken Xie, founder, chairman, and chief executive officer. "Our performance highlights the global demand for our network security solutions, improved execution, and the leverage we are now experiencing from prior investments in our sales, marketing, and product development. Looking forward, we expect the advanced persistent threat opportunity, continued execution in the data center with 100Gbps deployments, and next-generation firewall displacements, to be key drivers of our business."

Financial Highlights for the Fourth Quarter of 2013

Billings1,2: Total billings were $209.8 million for the fourth quarter of 2013, an increase of 20% compared to $174.3 million in the same quarter of 2012.

Revenue2: Total revenue was $177.4 million for the fourth quarter of 2013, an increase of 17% compared to $151.2 million in the same quarter of 2012. Within total revenue, product revenue was $83.9 million, an increase of 18% compared to the same quarter of 2012. Services revenue was $90.3 million, an increase of 18% compared to the same quarter of 2012.

Deferred Revenue: Deferred revenue was $432.6 million as of December 31, 2013, up $32.5 million from $400.2 million as of September 30, 2013.

Cash and Cash Flow1,4,6: As of December 31, 2013, cash, cash equivalents and investments were $843.0 million, compared to $839.0 million as of September 30, 2013. In the fourth quarter of 2013, cash flow from operations was $46.7 million and free cash flow was $39.5 million.

GAAP Operating Income2,5: GAAP operating income was $24.6 million for the fourth quarter of 2013, representing a GAAP operating margin of 14%. GAAP operating income was $35.0 million for the same quarter of 2012, representing a GAAP operating margin of 23%.

GAAP Net Income and Diluted Net Income Per Share2,5: GAAP net income was $12.0 million for the fourth quarter of 2013, based on a 53% tax rate for the quarter. This compares to GAAP net income of $21.5 million for the same quarter of 2012, based on a 41% tax rate for the quarter. GAAP diluted net income per share was $0.07 for the fourth quarter of 2013, based on 168.9 million weighted-average diluted shares outstanding, compared to $0.13 for the same quarter of 2012, based on 167.0 million weighted-average diluted shares outstanding.

Non-GAAPOperating Income1,2,5: Non-GAAP operating income was $37.8 million for the fourth quarter of 2013, representing a non-GAAP operating margin of 21%. Non-GAAP operating income was $41.6 million for the same quarter of 2012, representing a non-GAAP operating margin of 27%.

Non-GAAPNet Income and Diluted Net Income Per Share1,2,5: Non-GAAP net income was $25.9 million for the fourth quarter of 2013, based on a 33% effective tax rate for the quarter. Non-GAAP net income for the same quarter of 2012 was $28.2 million, based on a 34% effective tax rate. Non-GAAP diluted net income per share was $0.15 for the fourth quarter of 2013 based on 168.9 million weighted-average diluted shares outstanding, compared to $0.17 for the same quarter of 2012, based on 167.0 million weighted-average diluted shares outstanding.

Financial Highlights for the Full Year 2013

Billings1,3: Total billings were $684.2 million for fiscal 2013, an increase of 14% compared to $602.0 million in fiscal 2012.

Revenue3: Total revenue was $615.3 million for fiscal 2013, an increase of 15% compared to $533.6 million for fiscal 2012. Within total revenue, product revenue was $278.0 million for fiscal 2013, an increase of 12% compared to $248.9 million for fiscal 2012. Services revenue was $329.7 million for fiscal 2013, an increase of 20% compared to $274.0 million for fiscal 2012.

Deferred Revenue: Deferred revenue was $432.6 million as of December 31, 2013, an increase of 19% compared to deferred revenue of $363.2 million as of December 31, 2012.

Cash and Cash Flow1,4,7: As of December 31, 2013, cash, cash equivalents and investments were $843.0 million4, compared to $739.6 million as of December 31, 2012. In fiscal 2013, cash flow from operations was $147.4 million and free cash flow was $133.5 million.

GAAP Operating Income3,5: GAAP operating income was $72.1 million for fiscal 2013, representing a GAAP operating margin of 12%. GAAP operating income was $100.5 million for fiscal 2012, representing a GAAP operating margin of 19%.

GAAP Net Income and Diluted Net Income Per Share3,5: GAAP net income was $44.3 million for fiscal 2013, based on a 42% tax rate for the year. This compares to GAAP net income of $66.8 million for fiscal 2012, based on a 36% tax rate for the year. GAAP diluted net income per share was $0.26 for fiscal 2013, based on 168.2 million weighted-average diluted shares outstanding, compared to $0.40 for fiscal 2012, based on 166.3 million weighted-average diluted shares outstanding.

Non-GAAPOperating Income1,3,5: Non-GAAP operating income was $116.7 million for fiscal 2013, representing a non-GAAP operating margin of 19%. Non-GAAP operating income was $130.1 million for fiscal 2012, representing a non-GAAP operating margin of 24%.

Non-GAAPNet Income and Diluted Net Income Per Share1,3,5: Non-GAAP net income was $80.7 million for fiscal 2013, based on a 33% effective tax rate for the year. Non-GAAP net income for fiscal 2012 was $88.8 million, based on a 34% effective tax rate. Non-GAAP diluted net income per share was $0.48 for fiscal 2013 based on 168.2 million weighted-average diluted shares outstanding, compared to $0.53 for fiscal 2012, based on 166.3 weighted-average diluted shares outstanding.

1 A reconciliation of GAAP to non-GAAP financial measures has been provided in the financial statement tables included in this press release. An explanation of these measures is also included below under the heading "Non-GAAP Financial Measures."

2 Includes the impact of a $2.2 million and $1.9 million sale of patents during the fourth quarter of fiscal 2013 and 2012, respectively.

3Includes the impact of a $2.8 million and $3.7 million sale of patents during fiscal 2013 and 2012, respectively.

4Excludes $2.0 million equity investment in a privately-held company, which is recorded in other assets on the consolidated balance sheets.

5 Includes the impact of a $1.5 million non-recurring cumulative out-of-period adjustment recorded during the fourth quarter of fiscal 2012 to reflect a true-up related to forfeitures of stock awards granted to employees. The adjustment resulted in lower stock-based compensation expense and higher operating income and net income during the fourth quarter of fiscal 2012.

6During the fourth quarter of fiscal 2013, the Company repurchased $38.9 million of its common stock under its share repurchase program, all of which was paid in the fourth quarter of fiscal 2013 except for $5.4 million which was settled and paid in January 2014. In addition, capital expenditure related to the construction and improvement of the Company's future corporate headquarters amounted to $5.5 million.

7 During fiscal 2013, the Company repurchased $38.9 million of its common stock under its repurchase program, all of which was paid in fiscal 2013 except for $5.4 million which was settled and paid in January 2014. In addition, capital expenditure related to the construction and improvement of the Company's future corporate headquarters amounted to $6.8 million.

Conference Call Details

Fortinet will host a conference call today, January 29, 2014, at 1:30 p.m. Pacific Time (4:30 p.m. Eastern Time) to discuss its financial results. To access this call, dial (877) 303-6913 (domestic) or (224) 357-2188 (international) with conference ID # 34200682. A live webcast of the conference call and supplemental slides will be accessible from the Investor Relations page of Fortinet's website at http://investor.fortinet.com and a replay will be archived and accessible at http://investor.fortinet.com/events.cfm. A replay of this conference call can also be accessed through February 5, 2014, by dialing (855) 859-2056 (domestic) or (404) 537-3406 (international) with conference ID# 34200682.

Following Fortinet's financial results conference call, the Company will host an additional question-and-answer session at 3:30 p.m. Pacific Time (6:30 p.m. Eastern Time) to provide an opportunity for financial analysts and investors to ask more detailed questions. To access this call, dial (877) 303-6913 (domestic) or (224) 357-2188 (international) with conference ID # 34200866. This follow-up call will be webcast live and accessible at http://investor.fortinet.com, and a replay will be archived and available after the call at
http://investor.fortinet.com/events.cfm. A replay of this conference call will also be available through February 5, 2014 by dialing (855) 859-2056 (domestic) or (404) 537-3406 (international) with conference ID # 34200866.

Fortinet (NASDAQ: FTNT) is a worldwide provider of network security appliances and a market leader in unified threat management (UTM). Our products and subscription services provide broad, integrated and high-performance protection against dynamic security threats while simplifying the IT security infrastructure. Our customers include enterprises, service providers and government entities worldwide, including the majority of the 2012 Fortune Global 100. Fortinet's flagship FortiGate product delivers ASIC-accelerated performance and integrates multiple layers of security designed to help protect against application and network threats. Fortinet's broad product line goes beyond UTM to help secure the extended enterprise
-- from endpoints, to the perimeter and the core, including databases and applications. Fortinet is headquartered in Sunnyvale, Calif., with offices around the world.

This press release contains forward-looking statements that involve risks and uncertainties. These forward-looking statements include statements regarding demand for our solutions, momentum of our business and our expectations regarding the drivers of our future business. Although we attempt to be accurate in making forward-looking statements, it is possible that future circumstances might differ from the assumptions on which such statements are based. Important factors that could cause results to differ materially from the statements herein include the following: general economic risks; specific economic risks in different geographies and among different customer segments, including specific economic risks such as those that may result from the U.S. budget process; uncertainty regarding increased business and renewals from existing customers; uncertainties around continued
success in sales growth and market share gains; failure to grow the sales pipeline and to convert sales pipeline into final sales, and other sales execution risks; risks associated with successful implementation of multiple integrated software products and other product functionality risks; execution risks around new product development and introductions and innovation; customer support challenges; litigation and disputes and the potential cost, distraction and damage to sales and reputation caused thereby; market acceptance of new products and services; the ability to attract and retain personnel, and the loss of any key personnel; changes in strategy; risks associated with management of growth; lengthy sales and implementation cycles, particularly in larger organizations and service providers; technological changes that make our products and services less competitive; risks associated
with the adoption of, and demand for, the UTM model in general and by specific customer segments; timing of higher capacity data center deployments and upgrades; competition and pricing pressure and the impact of increasing competition and new entrants in the market; and the other risk factors set forth from time to time in our most recent Annual Report on Form 10-K, our most recent Quarterly Report on Form 10-Q and our other filings with the SEC, copies of which are available free of charge at the SEC's website at www.sec.gov or upon request from our investor relations department. All forward-looking statements herein reflect our opinions only as of the date of this release, and we undertake no obligation, and expressly disclaim any obligation, to update forward-looking statements herein
in light of new information or future events.

Non-GAAP Financial Measures We have provided in this release financial information that has not been prepared in accordance with Generally Accepted Accounting Principles (GAAP). These non-GAAP financial measures are not based on any standardized methodology prescribed by GAAP and are not necessarily comparable to similar measures presented by other companies. We use these non-GAAP financial measures internally in analyzing our financial results and believe they are useful to investors, as a supplement to GAAP measures, in evaluating our ongoing operational performance. We believe that the use of these non-GAAP financial measures provides an additional tool for investors to use in evaluating ongoing operating results and trends and in comparing our financial results with other companies in our industry, many of which present similar non-GAAP financial measures to investors.

Non-GAAP financial measures should not be considered in isolation from, or as a substitute for, financial information prepared in accordance with GAAP. Investors are encouraged to review the reconciliation of these non-GAAP financial measures to their most directly comparable GAAP financial measures below. As previously mentioned, a reconciliation of our non-GAAP financial measures to their most directly comparable GAAP measures has been provided in the financial statement tables included below in this press release.

Billings. We define billings as revenue recognized plus the change in deferred revenue from the beginning to the end of the period less any deferred revenue balances acquired from business combination(s) during the period. We consider billings to be a useful metric for management and investors because billings drive deferred revenue, which is an important indicator of the health and visibility of our business, and has historically represented a majority of the quarterly revenue that we recognize. There are a number of limitations related to the use of billings versus revenue calculated in accordance with GAAP. First, billings include amounts that have not yet been recognized as revenue. Second, we may calculate billings in a manner that is different from other companies that report similar financial measures. Management compensates for these
limitations by providing specific information regarding GAAP revenue and evaluating billings together with revenues calculated in accordance with GAAP.

Free cash flow. We define free cash flow as net cash provided by operating activities minus capital expenditures. We consider free cash flow to be a liquidity measure that provides useful information to management and investors about the amount of cash generated by the business that, after the acquisition of property and equipment, can be used for strategic opportunities, including investing in our business, making strategic acquisitions, and strengthening the balance sheet. Analysis of free cash flow facilitates management's comparisons of our operating results to competitors' operating results. A limitation of using free cash flow versus the GAAP measure of net cash provided by operating activities as a means for evaluating the Company is that free cash flow does not represent the total increase or decrease in the cash balance from
operations for the period because it excludes cash used for capital expenditures. Management compensates for this limitation by providing information about our capital expenditures on the face of the cash flow statement and under the caption "Management's Discussion and Analysis of Financial Condition and Results of Operations - Liquidity and Capital Resources" in our most recent Quarterly Report on Form 10-Q and Annual Report on Form 10-K.

Non-GAAP operating income and operating margin. We define non-GAAP operating income as operating income plus stock-based compensation expense, amortization expense and impairment charges related to certain intangible assets, reduced by the income from payments we received from a patent settlement. Non-GAAP operating margin is defined as non-GAAP operating income divided by revenue. We consider these non-GAAP financial measures to be useful metrics for management and investors because they exclude the effect of stock-based compensation expense, amortization expense and impairment charges related to certain intangible assets, and patent settlement related income so that our management and investors can compare our recurring core business operating results over multiple periods. There are a number of limitations related to the use of non-GAAP
operating income versus operating income calculated in accordance with GAAP. First, non-GAAP operating income excludes stock-based compensation expense, amortization expense and impairment charges related to certain intangible assets. Stock-based compensation expense has been and will continue to be for the foreseeable future a significant recurring expense in our business. Second, stock-based compensation is an important part of our employees' compensation and impacts their performance. Third, the components of the costs that we exclude in our calculation of non-GAAP operating income may differ from the components that other companies exclude when they report their non-GAAP results of operations. Management compensates for these limitations by providing specific information regarding the GAAP amounts excluded from non-GAAP operating income and evaluating non-GAAP operating income
together with operating income calculated in accordance with GAAP.

Non-GAAP net income and diluted net income per share. We define non-GAAP net income as net income plus stock-based compensation expense, amortization expense and impairment charges related to certain intangible assets reduced by the income from payments we received from a patent settlement, and includes the impact of the tax adjustment, if any, required to achieve the effective tax rate on a pro forma basis, which could differ from the GAAP effective tax rate. We define non-GAAP diluted net income per share as non-GAAP net income divided by the weighted-average diluted shares outstanding. We consider these non-GAAP financial measures to be useful metrics for management and investors for the same reasons that we use non-GAAP operating income and non-GAAP operating margin. However, in order to provide a complete picture of our recurring core
business operating results, we include in non-GAAP net income and non-GAAP diluted net income per share, the tax adjustment required to achieve the effective tax rate on a pro forma basis, which could differ from the GAAP tax rate. We believe the effective tax rates we used are reasonable estimates of long-term normalized tax rates under our global operating structure. The same limitations described above regarding our use of non-GAAP operating income and non-GAAP operating margin apply to our use of non-GAAP net income and non-GAAP diluted net income per share. Management compensates for these limitations by providing specific information regarding the GAAP amounts excluded from non-GAAP net income and non-GAAP diluted net income per share and evaluating non-GAAP net income and non-GAAP diluted net income per share together with net income and diluted net income per share calculated in
accordance with GAAP.

FORTINET, INC.

CONSOLIDATED BALANCE SHEETS

(Unaudited, in thousands)

December
31, 2013

December
31, 2012

ASSETS

CURRENT ASSETS:

Cash and cash equivalents

$

115,873

$

122,975

Short-term investments

375,497

290,719

Accounts receivable, net of allowance for doubtful accounts of $32 and $115, respectively

Reconciliation of non-GAAP results of operations to the nearest comparable GAAP measures

(Unaudited, in thousands, except per share amounts)

Reconciliation of GAAP to Non-GAAP operating income, operating margin, net income and diluted net income per share

Three Months EndedDecember 31, 2013

Three Months EndedDecember 31, 2012

GAAP Results

Adjustments

Non-GAAP Results

GAAP Results

Adjustments

Non-GAAP Results

Operating Income

$

24,643

$

13,186

(a)

$

37,829

$

35,040

$

6,510

(b)

$

41,550

Operating Margin

14

%

21

%

23

%

27

%

Adjustments:

Stock-based compensation expense

12,687

6,762

Amortization expense of certain intangible assets

508

(c)

226

(c)

Impairment charges related to certain intangible assets

469

-

Patent settlement income

(478

)

(478

)

Tax adjustment

746

(d)

218

(e)

Net Income

$

12,016

$

13,932

$

25,948

$

21,507

$

6,728

$

28,235

Diluted net income per share

$

0.07

$

0.15

$

0.13

$

0.17

Shares used in per share calculations - diluted

168,873

168,873

166,955

166,955

(a) To exclude $12.7 million of stock-based compensation expense, $0.5 million of amortization expense of certain intangible assets, and $0.5 million of impairment charges related to certain intangible assets offset by $0.5 million of patent settlement income in the three months ended December 31, 2013.

(b) To exclude $6.8 million of stock-based compensation expense and $0.2 million of amortization expense of certain intangible assets offset by $0.5 million of patent settlement income in the three months ended December 31, 2012.

(c) Effective second quarter of fiscal year 2013, amortization expense of certain intangible assets is excluded from GAAP operating income and GAAP net income. Prior period amounts have been adjusted to conform to the current period presentation.

(d) Non-GAAP financial information is adjusted to achieve an overall 33 percent effective tax rate on a pro forma basis, which differs from the GAAP tax rate, in the three months ended December 31, 2013.

(e) Non-GAAP financial information is adjusted to achieve an overall 34 percent effective tax rate on a pro forma basis, which differs from the GAAP tax rate, in the three months ended December 31, 2012.

Year Ended December 31, 2013

Year Ended December 31, 2012

GAAP Results

Adjustments

Non-GAAP Results

GAAP Results

Adjusments

Non-GAAP Results

Operating Income

$

72,090

$

44,579

(f)

$

116,668

$

100,475

$

29,604

(g)

$

130,079

Operating Margin

12

%

19

%

19

%

24

%

Adjustments:

Stock-based compensation expense

44,471

30,690

Amortization expense of certain intangible assets

1,551

(h)

826

(h)

Impairment charges related to certain intangible assets

469

-

Patent settlement income

(1,912

)

(1,912

)

Tax adjustment

(8,104

)(i)

(7,604

)(j)

Net Income

$

44,273

$

36,475

$

80,748

$

66,836

$

22,000

$

88,836

Diluted net income per share

$

0.26

$

0.48

$

0.40

$

0.53

Shares used in per share calculations - diluted

168,183

168,183

166,329

166,329

(f) To exclude $44.5 million of stock-based compensation expense, $1.6 million of amortization expense of certain intangible assets, and $0.5 million of impairment charges related to certain intangible assets offset by $1.9 million of patent settlement income in the twelve months ended December 31, 2013.

(g) To exclude $30.7 million of stock-based compensation expense and $0.8 million of amortization expense of certain intangible assets offset by $1.9 million of patent settlement income in the twelve months ended December 31, 2013.

(h) Effective second quarter of fiscal year 2013, amortization expense of certain intangible assets is excluded from GAAP operating income and GAAP net income. Prior period amounts have been adjusted to conform to the current period presentation.

(i) Non-GAAP financial information is adjusted to achieve an overall 33 percent effective tax rate on a pro forma basis, which differs from the GAAP tax rate, in the twelve months ended December 31, 2013.

(j) Non-GAAP financial information is adjusted to achieve an overall 34 percent effective tax rate on a pro forma basis, which differs from the GAAP tax rate, in the twelve months ended December 31, 2012.